Transformer tank



Feb. 17. 1925. 1,526,347

c. L. KNoTTs TRANSFORMER TANK Filed Jan. 8, 1920 w| NESS'ES: i INVENToR7W/e5 L. Kwffs ATTORNEY Patented Feb. 17, 1925.

UNITED STATES CHARLES L. XNOTTS, 0F SWISSVALE, PENNSYLVANIA, ASSIGNOR T0WESTINGHOUSE ELECTRIC & MANUFACTURDIG COMPANY, A

CORPORATION OF PENNSYLVANIA.

y krnensrcanina TANK.

Application led January 8, 1920. Serial No. 350,192.

normally immersed within acooling fluidand it has particular relation tocontainers therefor.

One of the objects of my invention is to provide a container for a highvoltage transformer in which the terminal bushings are disposed ininsulated compartments which are separate and independent of the mainportion of the container whereby the bushings may be individuall removedfor the purpose of inspection an repairs without the necessity ofexposing the rest of the apparatus.

Another object of the invention is to provide a container of thecharacter described in which the terminal bushing may be so disposed asto decrease the overall height of the apparatus and at the same time toincrease `the safety factor thereof with respect to high voltageruptures.

In the accompanyin drawings;

Figure l is a plan v1ew of a transformer embodying my invention, and YFig. 2 is a vertical longitudinal sectional view through the transformercasing taken on line II--II of FigVl, and illustrating the electricalapparatus in elevation.

Referring to the drawing, a transformer comprising a core member lembraced by coils 2and 3, is shown as positioned within a maincontaining tank or casing 4 provided with a removable cover 5. Thecasing 4 is filled with an insulating and cooling fluid which completelysurrounds the transformer. A cooling coil 6 is mounted directly abovethe transformer, in any preferred manner, and is also immersed withinthe cooling fluid.

The container 4 is provided with two oppositely disposed and outwardlyextending compartments 7 which are shown as formed integral with thecontainer and adjacent to the upper portion thereof. It will be observedthat the portion of the side wall of the tank 4 that is between thecompartresi-y ments 7 and the interior of the containerV 4 constitutespartitions 8 which render the compartments entirely separate andindependent of the container 4. The partitions 8 are preferably providedwith apertures 9 adjacent tothe lower portions thereof which establishcommunication between the compartments 7 and the interior of thecontainer whereby the level of the insulating fluid will remain the samein both of the compartments and the container.

The compartments 7 are each provided with a removable cover 10 throughwhich extends a terminal bushing ll. The lower` portion of the bushings1l projects downwardly into the compartments 7 and the fluid containedtherein to a point adjacent to the apertures 9. Conductors l2 carried bythe bushings 1l extend through the apertures 9 and are connected to themain windin s of the transformer.

he interior of each of the compartments 7 is completely lined withinsulating material which preferably comprises superposed layers offuller board 13.

From the foregoing it will be apparent that by my construction theterminal bushings ll may `be disposed at the side of the transformer andin overlapped relation thereto rather than above the same, there- -bymaterially decreasing the overall height of the apparatus while in noway reducing its insulating characteristics. Moreover by providing aseparate compartment for each of the terminal bushings, which areindependent from each other and from the main portion of the container,one of the bushings may be quickly and easily removed for the purpose ofinspection and repairs without the necessity of disturbing or exposingthe rest of the apparatus, as the fluid in the respective compartmentscompletely seals the communicating apertures 9 and prevents dust ormoisture from gaining access to the main portion of the container Iclaim as my invention:

1. A container for an oil-insulated electrical apparatus, lead-inbushings for said device, and auxiliary compartments for contain-ing oiland adapted to contain said bushings -positioned exterior to said maincontainer but having communication therewith below the level of theinsulating oil.

2. A container for an oil-insulated eleclead-'in bushings,

v. communicating means trical apparatus vcomprising s a main "bodyportion having a plurality of compartmentscontaining oil on the sideWalls there,A

of and communicating with said body portion through apertures in saidwalls below the surface of the oil `in the'main body por- 25 same levelof insulating fluid is maintained means with said body level oftheinsulatingin all of thev apparatus containers, Aand an- Vmsulatinglining fer said auxiliary cham-l I bers.

ing a plurality ofeonnnunicati'ngcompartments, for containing anelectrical apparatus-disposed Within said container andterminal side ofvsaid container and spaced therefrom..

6. A `container "or'an oil-insulated elec-` trical apparatusv comprisinga main body portion, and, a plurality4 forv contaimngoil carried'bysaid`body porcinsulating liquid, of

bushings lextending* downwardly into said compartments at eachv 5. Thevcombination with afcontainer havor' `compartments tion; each ofsaidjcompartments being sepa.y l

by partitions butin communicationl there-l lwith through apertures 'insaid partitions adjacent to the lowerportion of said'com part-ments. Y,s

In-testimony whereof, I have hereunto subscribed myv name cember, 1919.v

QHARLES' LfKriofr'rs.V

Y rated from .theinterlor of said body portion

